I don't know off the top of my head whether they would work.
You would have to measure the yoke resistances to see if it's compatible. If they're about the same, it should work. Don't know if the inverted video from nintendo means the tube's of a different type than the Electrohome tube, even if the yoke resistances are the same.
I used to have a link to tube resistance readings and compatibility, but an't find it now.
I'm sure Ken will be along soon to say, "No, it won't work. The yoke resistances on the Sanyo tubes are different than the Electrohome tubes."